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When I was reading some of the threads in this section that talk about what you are paying for when you buy an expensive scope, I remembered this video that Cannon produced about their lens manufacturing process.

Part 1: [ame]http://www.youtube.com/watch?feature=player_detailpage&v=OkWsk9rXpcU[/ame]

Part 2: [ame]http://www.youtube.com/watch?v=7T7BDeMU_Ks&feature=player_detailpage[/ame]

Part 3: [ame]http://www.youtube.com/watch?feature=player_detailpage&v=KpkAWZTwqI4[/ame]

And some truly geeky videos from the cannon website: http://www.canon.com/camera-museum/tech/l_plant/main.html
Click on "Lens Gallery" in the lower left corner to learn all about fluorite lenses & aspherical lenses.

Seeing the level of research and manufacturing technology that's involved helps me understand why top shelf scopes cost what they do.

Enjoy
 

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Thanks for posting this Monk.

In 1983 I hand ground an 8" telescope mirror which we now use for a spoting scope. At 100 yds you can see the paper fiber where the bullets tear the paper.

It made me realize even more that there is a God. The optics in the eye didn't just happen.
 
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